| The synthesis of polymer composite materials containing lanthanidecomplexes is an important approach to the preparation of photoelectric functionalmaterials. In the synthetic process, the partial polar group in polymer chains isable to replace some micro-molecule ligand (such as water) in lanthanide complexoccurring interaction with lanthanide ion, leading to the profound effect of thestructure and performance of lanthanide polymer composite materials. In this paper, we established a promising strategy for the synthesis oftransparent polymer luminescent materials containing lanthanide complexes by thematrix material as styrene/α-methyl acrylic acid copolymer system. In addition,we established a new method for the materials by in situ composite in the abovecopolymerization system. In Chapter 2, the lanthanide complexes were synthesized by conventionalchemistry method, the copolymer system of styrene/α-methyl acrylic acid whichcan coordinate with lanthanide and possess polymeric activity was selected. Novelcomposite resins possessing good luminescent properties have been synthesizedthrough a free radical copolymerization of styrene, α-methyl acrylic acid and thebinary or ternary complexes of lanthanide ions (Eu3+ and Tb3+). We characterizedthe molecular structure, physical and mechanical performance, and theluminescent properties of the composite resins. Spectra investigation indicated thatα-methyl-acrylic acid act as both solubilizer and coligand. Photoluminescencemeasurement indicated that the lanthanide complexes show superior emissionlines and higher intensities in the resin matrix than in the corresponding purecomplex powders (although the complex content in copolymer system is only 0.31wt %). The phenomenon can be attributed to the restriction of molecular motion ofcomplexes by the polymer chain networks and the exclusion of water moleculesfrom the complex. These results indicated that these composite resins possessedbetter transparency (80～89%) and mechanical performance. We also found thatthe luminescence intensity decreased with increasing content of α-methyl acrylicacid in the copolymerization system. The lifetime of the lanthanide complexes alsolengthened when they were incorporated in the polymer matrix. In addition, wefound that the relationship between emission intensity and Tb (Eu) content exhibita tendency of concentration quenching. Then we expanded this method toluminescent polymer materials, and the nanostructured luminescent filmcontaining terbium complex were synthesized by doping method in chloroformsolution, and characterized by fluorescence excitation and emission spectra,UV–Vis absorption spectra and TEM. It was indicated that terbium complex weredispersed in PVK matrix as nanosize, and the films emitted a characteristicfluorescence of terbium ion. In chapter 3, the in-situ composite process and photophysical properties ofoptical resin containing lanthanide complexes have been investigated. Thecomposite resins with intense narrow bandwidth fluorescence were obtainedthrough a free radical copolymerization of EuCl3 (or TbCl3), organic ligands,styrene and α-methyl acrylic acid, in which the binary or ternary complexes oflanthanide ions (Eu3+ and Tb3+) were synthesized by in situ method through acopolymerization process. We characterized the molecular structure, the dispersedmorphology of lanthanide complexes, and the luminescent properties of thecomposite resins. The relationship between the fluorescence properties of thecomposite resins, the kinds of organic ligands, the relatively molar ratio of organicligands to lanthanide ion, and the composition of polymer system wereinvestigated. Transmission electron microscopy (TEM) results showed that thelanthanide complexes, with a mean diameter below 20 nm, were dispersedhomogeneously in the composite resins. This in situ composite resin showedstronger luminescence intensity and longer luminescence lifetime than...
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